Method of making pavements.



` c. DAVIS. 3 Y n METHOD 0F MAKING PAVBMBNTS. l l D v- APPLICATION FILED PEB.23, 1910.

Patented Feb. 21, 1791i WIT/VESSEL? Oax/As 1 To all whom it'may concern:

i UNITED .STATES rATENT OFFICE;

CLOYD DAVIS, 0F MINEOLA, NEW YORK. in

METHOD OF MAKING PAV-EMENTS.

'Be it known that I, (.Loim Davis, a citizen of the United States, and residing :it Mineola, in the county ofNassau and State of New York, have invented a certain new and useful Method of Making Paveinents, of which the following is a specification, snclr as `will enable those skilled in the art to which itappertains to make and use the same. j t

This invention relates to pavements, or to the paving of streets and roads= and it con- -sists of a new and useful method which is fully disclosed in the followingl .specication and by nic-ans of which a parement or road surface is produced which employs among other ingredients asphaltuui or a similar hydrocarbon productpieferably treated so as to make it. lapidescent in quality, whereby the pavement or road surface so produced is practically indestructible under ordinary use and `will not hecouie soft and oil)y under the influence oi' the. ra'vs of the sun or in warm weather, and which also will not become slippery when moist or covered with water in cold weather, and the .surface of which will he .smooth and even tlirouglioiit,a11d which is also comparatively inexpensive, hoi'h as to its original cost and the expense of maintenance: and with these and other ohjec'ts in view the invention consists in the method of paving streets or roads hereina ftei' described and claimed. j

The invention is fullydisclosed :n the following specification, 'of which the zirconiianvinf drawnir forms a )art` said drawn F h 5 ing heiner a partial transverse vertical secrtion of a parement niadc according to my invention. Y

In the practice ofmy invention the road hed is first prepared according to .-iii \y preferred plans` or .spccitications and thi hed l is then thoroughly rolled with a roller pret'- crahly otabout ten tous weight. \t'iei' the preparation oi" the road bed as above described said hed is covered with a layer b ol' hroken stone preferably ot' not less than two or two and one-hall` inches in dimensions.

` alid .said laver ot' broken stone may he of any preferred thickness accordingr to the use for which tlieroad is intended. and this layer of broken stone is'tilled in with sandy loam Z, after which the siirfacc is again rolled and thoroughly broonicd until a smooth surface .is produced, which is devoid of .ill craehs, 4crevices. or apertures, and the rolling is con- Specitication o! Letters Iatent. Pateuted- Ffgb, 21, 1911, Application led Feln'nary 23, 1910. Serial No. 545.338.

tinued until a solid, hard surface is irovided.` 'Another layer c of broken stone., ner than the first named layer and preferably broken .so as to not exceed one and one-half inches in dimensions is applied, the thickness of said laver being predetermined according to the use for vwhich the road is intended and this layer of stone is again rolled and filled in to approximately one or one and one-halt' inches from the too surface thereof with fine screened sand c: ree from 10am, the screen employed being preferably of about one-half inch mesh, and on this surface so produced A the surface thusA prmluced is again thtroughli' liroonied until the screenings and sand are well mixed t0- ;ether and "ie said surface is devoid of all creases between thestofie utter which the said surface is again roh-ed until it is liarfl as it is; possible to ineke it, and during'this operation of rollinpr the said surface is also brooined. The road or street. is now closed to all traftic and allowed to stand at lea t twenty-four hours free of use, at the end of which time the surface is again preferably puddled with the usual sprinkling wagon. after which a cover or layer r/ of fine gravel ahout one-half inch in thickness is applied.

The asphaltnm employed may. if desired,

be the ordinariv usphaliiim of commerce. but in practice l prefer to use a composition consisting"r of the fullowin; r ingredients1- In preparimbr thisV conipoftion for use the :isplialtuin is first heated and dissolved in the nusual manner, after which the acid and water are. thoroughly mingled and the prodiict vthus produced is then thoroughly mixed `with the melted asphalixnn, after which the composition thus produced is allowed to cool when it. assumes the form of ordinary asphaltuiii, which in the process of making:r

the pavement hereinhefore described is melted and-applied in the manner specified; The composition produced in the niannerv described consists of a siilfuieted asphaltum' having lapidescent qualities, in

Y whiehvthe'oil -of the asphaltum is oxidized or partially so and a pavement of the class specified in whichthis composition is em! ployed will not become soft under the effects of summer heat and will not exude' oil in the manner of ordinary asphaltuni pavements. A pavement produced in this manner is also much less expensive than asphaltum pavehients as usually made, and is also much less expensive than what are known as block pavements which employ Sand and asphaltum or coal tar, and the surface of paveihents produced in this manner consists,

practically, of a-solid, concrete substance and wili not become slipperyin wet weather and may be easily kept clean at all times and is also wea-ther proof, and many other advaiitages will readily suggest themselves to :ill those familiar with the construction of piivements or road beds of this class.

The composition of asphaltuiii, sulfuric acid and water described is not claimed liereiiihiit is made the subject of a separate applic-'tion filed by me on equal date herewith. i

vsurface thus produced, covering said surface with another layer of broken stone, the stone hein of dimensions than those of the lirst ayer, filling ni said layer with sand to Having fully described ini' invention, what g igiuvel so as to produce ii solid concreti-- within a plcdetei'niined point of thitop thereof und rilling the saine. then placinpr thereon :i layer consisting of a hydrocarbon product, the t.lii .l\iie.ssl of which is not sntlicient to thoroughly cowr'the last layer of stone, then covering.:r the .said last layer ot' stone and the layer cons-Ming ot' :i hydrocarbon product with screenings or stone dust, siiilicient to cover the lii'oken stone, then covering the screening-s or stone dust with a thin Ylayer of coarse .screened sund, then hiooniingr until the screenings :ind squid are thoroughly niixcd and then rolling the sui'- face thus produced. A

2. The herein described method of making pavements consisting of tii'st providinft,r a road bed, coveriner the .saine with a layer of lirolten stone, filling said layer ot' hrnlcen .stone with sand or sand)Y loani, rollin;r the surface thus produced` covering said surface with another layer of broken stone, the stone being of less dimensions than those ot' the icirst layer, filling in said layer with sand to within a predetermined point of the .top thereof und roliingif the saine. then placingr thereon a layer consisting of'l hyd'rm-,arlmn product, the thickness of which is not suilicient to thoroughly cover the last layer .f

stone, then covering the said lust layer ot' stone and the. layer consisting of a hydrocarbon product with screenings or stone dust, siitlicicnt to cover vthe liroiten stone. then covering the. screenings or .stone dust with a thin layer of coarse .screened sand. then hi'ooniing,r until the scrwnings and sand are tlioroughl'i mixed. then rolling' the snrface thus produced. and at the end ot :i predetermined time coveringr the .surface thus pi'oilucedwith gravel and then rolling the surface.

ln testimon)v that l clzinn the foregoing :is

fini' invention l have .signed in y naine in pri-sence ol' the snliscrihing witnesses this Bist day of Fein-nari' lilltl.

(llitiYl) l).\\'l.`-`.

ll'itnesses:

(l. E. llimiulixi', ll. 1l. lli'icnsox. 

